Question

What are the major functions of the nervous system?

What are the two divisions of the nervous system? How are they different?

What is a neuron?

What are the three major neurons based on function (list and define)?

How is the somatic nervous system different from the autonomic nervous system?

What is a synapse?

What are neurotransmitters? List two and explain their functions.

List and explain the role of the supporting cells in the PNS.

List and explain the role of the supporting cells in the CNS.

What is the make-up and role of the myelin sheath?

What is a nerve plexus?

Explain the reflex arc.

What are the structures that make-up the CNS?

What does your brain di?

What branches off the spinal cord?

What do the lower spinal nerves control?

What do the thoracic spinal nerves control?

What do nerves above the neck do?

What can effect signals going into and out of the spine?

What can a subluxation cause?

Where can subluxations occur and what happens as a result?

Answer 1

Nervous System has sensory function, integration function and motor function. Sensory neuron brings sensory impulses from receptors in the organs to the integration center where the integration center processes and interprets the sensory information and then gives the decisions in form of impulses which goes to effector organs via the motor neurons.

The two divisions of nervous system are: Central nervous system and peripheral nervous system. The central nervous system is divided into brain and spinal cord whereas peripheral nervous system is divided into somatic nervous system and autonomic Nervous system. The peripheral nervous system consists of nerves and ganglia outside the brain and spinal cord.

Neuron is a structural and functional unit of nervous system. Neuron is s cell which carries electrical impulses in body. Neuron has got three main parts: Dendrites, Cell body or Soma and Axon. Through dendrites the neuron receives signal from other neurons, then the dendrites branch into soma, then the axon conducts signal away from soma to other neurons.

The three major neurons are sensory neurons, interneurons and motor neurons. Sensory neurons brings signal from the receptors in the organs of the body to the integration center where the signal is processed and futher information is passed to motor neurons to effect the action on effector muscles. Interneuron in the integration center connects sensory neurons to motor neurons and transfers signals between them.